45740257 has 4 divisors (see below), whose sum is σ = 45758356. Its totient is φ = 45722160.

The previous prime is 45740249. The next prime is 45740263. The reversal of 45740257 is 75204754.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37161216 + 8579041 = 6096^2 + 2929^2 .

It is a cyclic number.

It is not a de Polignac number, because 45740257 - 2³ = 45740249 is a prime.

It is a super-2 number, since 2×45740257² = 4184342220852098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45740857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4494 + ... + 10567.

It is an arithmetic number, because the mean of its divisors is an integer number (11439589).

Almost surely, 2^45740257 is an apocalyptic number.

It is an amenable number.

45740257 is a deficient number, since it is larger than the sum of its proper divisors (18099).

45740257 is a wasteful number, since it uses less digits than its factorization.

45740257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18098.

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 45740257 is about 6763.1543676010. The cubic root of 45740257 is about 357.6291140400.

The spelling of 45740257 in words is "forty-five million, seven hundred forty thousand, two hundred fifty-seven".